Contacts of the helix formed by residues 350 - 354 (chain C) in PDB entry 1M7X
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with GLU 350 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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192C MET* 5.4 0.3 - - - +
194C ASP* 4.5 8.4 - - - +
196C ASN* 4.9 6.1 + - - -
202C LYS* 4.6 7.1 + - - -
349C ALA* 1.3 72.3 - - + +
351C PHE* 1.3 66.5 + - - +
352C ASP 3.7 0.2 + - - -
353C GLY* 3.4 21.1 + - - +
354C THR 2.8 18.6 - - - +
355C ASN* 4.3 12.3 - - - +
358C GLU* 3.0 11.1 + - - +
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Residues in contact with PHE 351 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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142C VAL* 4.0 21.3 - - + -
143C TRP 3.3 27.4 - - - -
144C ALA* 4.1 5.2 - - + -
190C TYR* 6.0 2.0 - + + -
192C MET* 4.1 9.6 - - + -
202C LYS* 3.6 44.2 - - + +
203C SER 4.2 8.5 - - - -
205C PRO* 4.2 17.5 - - + -
347C ALA 4.4 4.5 - - - -
348C LEU* 3.6 21.7 + - + +
349C ALA 2.4 12.4 + - - -
350C GLU* 1.3 68.1 - - - +
352C ASP* 1.3 85.0 + - - +
353C GLY 2.5 12.1 + - - -
354C THR 3.1 7.6 + - - +
356C LEU* 3.5 27.4 - - + +
357C TYR* 4.0 13.7 - + + -
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Residues in contact with ASP 352 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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144C ALA* 3.6 26.7 - - + -
145C PRO* 3.5 0.2 - - - +
146C ASN* 2.9 48.9 + - - +
147C ALA* 3.5 8.0 + - - +
192C MET* 3.2 32.5 - - - +
194C ASP* 4.2 0.7 - - - -
195C ALA 3.3 13.7 + - - -
351C PHE* 1.3 88.6 - - - +
353C GLY* 1.3 54.7 + - - +
354C THR* 2.8 18.2 + - - -
356C LEU* 3.1 22.8 - - + +
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Residues in contact with GLY 353 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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194C ASP* 3.5 24.2 + - - -
195C ALA* 3.5 16.2 - - - -
196C ASN* 3.8 15.7 + - - +
350C GLU* 3.4 18.3 + - - +
351C PHE 2.5 8.1 + - - -
352C ASP* 1.3 73.8 - - - +
354C THR* 1.3 64.4 + - - +
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Residues in contact with THR 354 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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146C ASN* 3.0 35.3 + - + +
195C ALA* 3.9 11.4 - - + -
350C GLU* 2.8 28.4 - - - +
351C PHE 3.6 2.5 - - - -
352C ASP* 2.8 18.5 + - - -
353C GLY* 1.3 79.1 - - - +
355C ASN* 1.3 75.6 + - - +
356C LEU* 3.9 5.9 + - - +
379C ARG* 5.6 1.2 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il